header.jsp

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<header>
    <div class="d-flex">
        <div class="ml-auto">
            <a href="/logout" class="btn btn-dark">Salir</a></div>
    </div>
</header>